Tài liệu, ebook Cơ Sở Dữ Liệu

Summary (Continued) Guidelines for Web fill-in forms (continued) Prepare two basic buttons on every Web fill-in form: Submit and Clear Form If the form is lengthy and the users must scroll extensively, divide the form into several simpler forms on separate pages Create a feedback screen that highlights errors in an appropriate color and refuses...

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Output - Print, display, audio, microforms, CD-ROMs or DVDs, and Web-based documents Output design objectives – design output to serve the intended human and organizational purpose to fit the user to deliver the right quantity of output to deliver it to the right place to provide output on time to choose the right output method Output...

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Summary (Continued) The systems proposal Identifying costs and benefits Break-even analysis Cash-flow analysis Present value analysis Putting together an effective systems proposal Visual considerations Oral presentation

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Decision Analysis Advantages Structured English is useful when many actions are repeated and when communicating with others is important Decision tables provide complete analysis of complex situations while limiting the need for change attributable to impossible situations, redundancies, or contradictions Decision trees are important when proper...

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Summary The data dictionary A reference work containing data about data Include all data items from data flow diagrams Repository A larger collection of project information Defining data structures Defining elements

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Summary (Continued) Partitioning data flow diagrams Whether processes are performed by different user groups Processes execute at the same time Processes perform similar tasks Batch processes can be combined for efficiency of data Processes may be partitioned into different programs for security reasons

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Summary (Continued) Core practices of the agile approach Stages in the agile development process User stories Agile lessons Scrum methodology Dangers to adopting innovative approaches

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Summary Sampling Designing a good sample Types of samples Sample size Hard data Quantitative document analysis Qualitative document analysis Observation Playscript STROBE STROBE elements Applying STROBE

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Summary Interviewing Interview preparation Question types Arranging Questions The interview report Joint Application Design (JAD) Involvement and location Questionnaires Writing questions Using Scales and overcoming problems Design and order Administering and submitting

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Summary Project management fundamentals Project initiation Determining project feasibility Activity planning and control Project scheduling Managing systems analysis team members Problem definition Issues of the present system The objective for each issue The requirements that must be included in all proposed systems

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